Identify the option, where all the columns are not matched correctly:

1.	Abrin	Secondary metabolite	Drug
2.	GLUT-4	Protein	Transport carrier
3.	Lecithin	Phospholipid	Cell membrane
4.	Thymidylic Acid	Nucleotide	DNA

The vitamin Niacin functions as a coenzyme in:

There cannot be a living state without :

1. Metabolism

2. Capability of reproduction

3. Self-consciousness

4. Presence of DNA in a cell

The six most common atoms in organic molecules are:

The unique properties of each amino acid are determined by its particular:

1. R group

2. Amino group

3. Kinds of peptide bonds

4. Number of bonds to other amino acids 

Given below is the graph showing the effect of substrate concentration on enzyme activity. In the presence of a competitive inhibitor, when the concentration of the substrate is progressively increased:

The compound shown below:

1. is a component of the ATP molecule

2. is most commonly found in ori region of DNA

3. can have enzymatic activity

4. may be a component of the cell membrane

The zwitterion is shown by:

1. Only A

2. Only B

3. Both A and C

4. A, B and C

Consider the following statements:

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III

Match each item in Column I with one item in Column II and chose your answer from the codes given below:

Codes

            I           II         III         IV

1.         1           2           3           4

2.         2           1           4           3

3.         2           1           3           4

4.         1           2           4           3